/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.log4j.lf5.util;

import org.apache.log4j.lf5.LogLevel;
import org.apache.log4j.lf5.LogRecord;

import java.io.PrintWriter;
import java.io.StringWriter;

/**
 * <p>
 * A LogRecord to be used with the LogMonitorAdapter
 * </p>
 * 
 * @author Richard Hurst
 */

// Contributed by ThoughtWorks Inc.
public class AdapterLogRecord extends LogRecord {
	//--------------------------------------------------------------------------
	// Constants:
	//--------------------------------------------------------------------------

	//--------------------------------------------------------------------------
	// Protected Variables:
	//--------------------------------------------------------------------------

	//--------------------------------------------------------------------------
	// Private Variables:
	//--------------------------------------------------------------------------
	private static LogLevel severeLevel = null;

	private static StringWriter sw = new StringWriter();
	private static PrintWriter pw = new PrintWriter(sw);

	//--------------------------------------------------------------------------
	// Constructors:
	//--------------------------------------------------------------------------
	public AdapterLogRecord() {
		super();
	}

	//--------------------------------------------------------------------------
	// Public Methods:
	//--------------------------------------------------------------------------
	public void setCategory(String category) {
		super.setCategory(category);
		super.setLocation(getLocationInfo(category));
	}

	public boolean isSevereLevel() {
		if (severeLevel == null)
			return false;
		return severeLevel.equals(getLevel());
	}

	public static void setSevereLevel(LogLevel level) {
		severeLevel = level;
	}

	public static LogLevel getSevereLevel() {
		return severeLevel;
	}

	//--------------------------------------------------------------------------
	// Protected Methods:
	//--------------------------------------------------------------------------
	protected String getLocationInfo(String category) {
		String stackTrace = stackTraceToString(new Throwable());
		String line = parseLine(stackTrace, category);
		return line;
	}

	protected String stackTraceToString(Throwable t) {
		String s = null;

		synchronized (sw) {
			t.printStackTrace(pw);
			s = sw.toString();
			sw.getBuffer().setLength(0);
		}

		return s;
	}

	protected String parseLine(String trace, String category) {
		int index = trace.indexOf(category);
		if (index == -1)
			return null;
		trace = trace.substring(index);
		trace = trace.substring(0, trace.indexOf(")") + 1);
		return trace;
	}
	//--------------------------------------------------------------------------
	// Private Methods:
	//--------------------------------------------------------------------------

	//--------------------------------------------------------------------------
	// Nested Top-Level Classes or Interfaces
	//--------------------------------------------------------------------------
}
